I can't really can't see the picture to help you out
ok so he is owing his sister 24 and he gives her 15
so 24-15=9
but as an addition expression it will be
x+15=24
x=24-15
x=9
She needs D.5 because if she wants all the students in her class to have at least 1, she needs to buy 5 to make sure all the students gets a pencil. 5 x 5 = 25.
I know u are supposed to use formulas to do this...but it is just as easy to do it this way...that is, if u dont have many numbers...if u were looking for s20, we would have used formulas...lol
u will notice that in ur pattern, their is a difference of 5 between each number....this is an arithmetic sequence
start at 3
3 + 5 = 8
8 + 5 = 13
13 + 5 = 18
18 + 5 = 23
23 + 5 = 28
28 + 5 = 33
thats ur first 7 numbers...so just add them and u will have s7
s7 = 126
Answer:
The total weight of 400 pumpkin seeds is 2.24 ounces.
Step-by-step explanation:
Total number of seeds counted in the pumpkin = 400
Weight of 10 seeds = 0.056 ounces
So, the weight of 1 seed = 
= 
⇒ The weight of 1 pumpkin seed = 0.0056 ounce
Now, the weight of such 400 seeds = 400 x (weight of 1 seed)
= 400 x ( 0.0056 o.) = 2.24 ounces
Hence, the total weight of 400 pumpkin seeds is 2.24 ounces.